Prepare for 0.6.1 release

Change-Id: Iaf148b70c3e30a0cd6737239a769d54c24e43a80
Refs: #4497
diff --git a/wscript b/wscript
index bcfe928..132bd9d 100644
--- a/wscript
+++ b/wscript
@@ -3,7 +3,7 @@
 from waflib import Logs, Utils, Context
 import os
 
-VERSION = "0.6.0"
+VERSION = "0.6.1"
 APPNAME = "ndn-cxx"
 PACKAGE_BUGREPORT = "https://redmine.named-data.net/projects/ndn-cxx"
 PACKAGE_URL = "http://named-data.net/doc/ndn-cxx/"